FordAerostar1990Overview/ford/aerostar/1990/base/

1990 Ford Aerostar

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 Aerostar.

The 1990 Ford Aerostar's 4.5-quart engine oil capacity at 5W-30 API viscosity reflects the straightforward but specific maintenance requirements of this model year's powertrain. With 238 total owner complaints dominated by electrical system issues and accompanied by seven recalls, the 1990 model year occupies a middle-to-upper position in the Aerostar's 1990–2000 complaint history — substantially below the 1993 peak of 471 complaints but dramatically above the 1998 low of just four. That spread tells researchers the early-generation Aerostar carried meaningful reliability concerns, with electrical faults as the defining weakness, before the model matured significantly by the late 1990s.

Model year199719961995199419931992199119901989

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4.5 qtOEM · verified
Engine oil type5W-30 APIOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

OE service part numbers OEM · verified

ThermostatRT1054

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length190.2 in
Overall width72 in
Overall height73.2 in
Wheelbase118.9 in
Curb weight3503 lb
Track (front / rear)61.4 / 59.8 in

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4.5 qt of 5W-30 API engine oil, GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear OilGL-5
Differential Gear Oil Capacity2.5 pints Dana Axle
Differential Gear OilGL-5
Differential Gear Oil Capacity5 Pints Ford 8.8
Differential Gear OilGL-5
Differential Gear Oil Capacity3.5 pints Rear Ford 7.5
Engine Oil5W-30 · API

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 30,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 7,500 miTire & Wheel Assembly (rotate)
Every 7,500 miClutch Master Cylinder (inspect fluid level) · Driveshaft U-Joint (lubricate) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Power Steering System (inspect) · Shift Linkage (lubricate)
Every 15,000 miBrake System (inspect) · Disc Brake Caliper Guide Pin (lubricate) · Parking Brake System (inspect) · Tire & Wheel Assembly (rotate)
Every 30,000 miBrake Hydraulic System (inspect fluid level) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Spark Plugs (replace) · Throttle Body Lever Stud (lubricate)
Every 60,000 miAccessory Drive Belt (inspect) · Exhaust System (Complete) (inspect) · Idle Air Bypass Solenoid (inspect) · PCV Valve (replace) · Spark Plug Wires (replace) · Throttle Body (inspect)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 1990 Ford Aerostar sits at the beginning of an escalating complaint trend, with its 238 complaints rising steadily to a peak of 471 in 1993 before declining in later model years. Although 1990 has the lowest overall complaint volume of the early generation, it carries the joint-highest number of recalls at 7, indicating initial manufacturing defects that required significant federal intervention. The data does not specify root causes, but the primary complaint areas are the Electrical System (57), Power Train (34), Service Brakes (27), and Engine & Engine Cooling (26), with the latter likely contributing to the alarming 63 fire complaints recorded for this year. Furthermore, 27 crash complaints underscore severe safety vulnerabilities in this model. Given its position at the onset of the generation's most problematic arc and its disproportionate fire and recall figures, the 1990 Aerostar is a poor choice for a used vehicle purchase.

7
Open recalls
NHTSA campaigns
46
Service bulletins
Manufacturer communications
5
ODI investigations
Office of Defects Investigation
238
Owner complaints
27 involved a crash · 63 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 238 complaints on record, top 8 components.

Electrical System57
Power Train34
Service Brakes, Hydraulic27
Engine & Engine Cooling26
Fuel System, Gasoline25
Vehicle Speed Control15
Visibility8
Steering7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 7 campaigns on record for this vehicle.

90V144000Seats:Front Assembly:ReclinerReported 06/08/1990

THE SECOND ROW RIGHT HAND SEAT ASSEMBLY HAS A TILT FORWARD FUNCTION. A LATCH RETAINS THE SEAT IN THE NORMAL RIDE POSTION, AND THIS LATCH MAY RELEASE UNDER SEVERE FRONTAL IMPACT CONDITIONS, ALLOWING THE SEAT TO PIVOT… Remedy: REPLACE SEAT PAWL ASSEMBLY WITH A REVISED DESIGN ASSEMBLY.

98E010000Service Brakes, Air:Disc:RotorReported 08/04/1998

EQUIPMENT DESCRIPTION: AFTERMARKET BRAKE ROTORS FOR USE ON CERTAIN FORD AND MAZDA TRUCKS. CRACKED CASTINGS CAUSED CRACKS TO APPEAR ON THE OUTER DIAMETER OF THE ROTOR HAT OR AROUND THE STUD HOLE. Remedy: AIMCO WILL REIMBURSE CONSUMERS/INSTALLERS FOR THE COST OF REPLACEMENT ROTORS AND INSTALLATION. CONSUMERS ARE REQUESTED TO RETURN TO THE LOCATION WHERE THE ROTORS WERE ORIGINALLY…

Technical service bulletins NHTSA · verified

Showing 5 of 46 bulletins on record with NHTSA.

BulletinDateComponentSummary
011972001-10-01Engine And Engine CoolingSOME VEHICLES EQUIPPED WITH THE 4.0L OHV ENGINE MAY EXHIBIT AN ENGINE NOISE WHICH MAY BE…
011562001-08-06VisibilitySOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC
011572001-08-06Unknown Or OtherINFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC
011242001-06-25Engine And Engine CoolingON SOME VEHICLES, ENGINE OIL MAY CONTINUE TO LEAK FROM THE ENGINE OIL PAN GASKET AREA…
0023102000-11-13Power TrainSUBJECT REGARDING CONTAMINATION FROM PRIOR TRANSMISSION CONCERNS OR EXCESS WEAR MAY BE…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Aerostar. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1990 Aerostar take?

4.5 qt of 5W-30 API, per the factory manual.

Does the 1990 Aerostar have open recalls?

NHTSA lists 7 recall campaign(s) for this model year. Check your specific vehicle by VIN.